Gearing.



H. E., F. E.& H. l. EBERHARDT.

GEARING.

APPLICATION FILED Aue. I2. I9Is.

Patented Nov. 13, 1917.

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H. E., F. E. & H. LAEBERHARDT. emma.

APPLICATION FILEU UG.12, |913. 1,246,568. Patented Nov. 13, 1917.

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UNITED `STAIES PATENT OFI HENRY E. EBERHARDT, FRANK E. EBERHARDT, AND HENRY J. EBERHARDT, OFk

NE'WARK, NEW JERSEY, ASSIGNORS TO NEWARK GEAR CUTTING MACHINE GO., 0F NEWARK, NEYV JERSEY, A CORPORATION OF NEW JERSEY.

GEARING.

To all Ywwm t may concern:

Be it known that. we, HENRY E. Ennu- HARDT, FRANK E. EBERHARDT, and HENRY J. EBERHARDT, citizens of the United States, and residents of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Gearing, of which the following isa specification.

The invention relates to improvements in machines, more particularly of the type known as shaping machines7 in which a cutting tool is caused to reciprocate, for eX- ample, by means of a crank motion the speed of which may be varied to suit the requirements. eretofore, it has been the practice in machines of this character to provide intermediate gearing and shafts between the power shaft and the crank pin, the larger part of said mechanism being in action at all speeds.

In the present invention, the simple features of the original type of one-speed, with pulley variation, machine are retained for cutting at high speeds, viz: a crank gear, its pinion, onepower shaft and a cone thereon; and with the aforementioned parts there is associated suitable speed changing mechanism for obtaining the intermediate speeds.

The invention, therefore, has for its object first-to provide a simple and durable means of obtaining a wide range of cutting strokes; secondlyto obtain such range of high speed cutting strokes with a minimum number of intermediate parts, all other shafts and gears employed for obtaining speeds other than said high speeds being then inoperative and motionless; and thirdly-to aord facilities for progressive control and indication of any desired range of speeds.

The nature of the invention will be best understood when described in connection with the accompanying drawing, in which- Figure 1 is a side elevation of a shaping machine embodying the invention.

Fig. 2 is an end elevation, partly in section, and shows in detail the gearing employed.

Fig. 3 is a side elevation of a shaping machine embodying a simplified form of the invention.

Fig. l is `an end elevation, partly in section, ofthe simplified form of the invention.

Specification of Letters Patent.

Application filed August 12, 1913.

Patented Nev. 13, 1917.

vSerial No. 784,369.

Similar characters of reference designate corresponding parts throughout the several views.

Referring to the drawings, more particularly Figs. 1 and Q, 1 designates the frame of the shaper and is provided at its upper part with a reciprocating ram 2 actuated by a lever 3 which is hinged at its lower end by means of a flanged :bearing 4 to a hinge pin 5. The upper end oflever 3 is hinged to a link 6 by means of a pin 7; and the said link is hinged at its opposite end to a block 8 by means of a pin 9. A clamping plate 10 and handle l1 are arranged to secure said block 8 to the said ram 2. The lever is preferably made of a solid piece of rectangularl steel, as shown, and is caused to oscillate by a crank pin 12 vcopeiating with a crank pin block 13. rEhe reciprocating mechanism hereinbefore disclosed is more fully set forth in a copending application Serial No. 7 63,498, filed April 25th, 1913 by Henry E. Eberhardt, and no claim to the same is made in the present application.

`The crankpin 12- is secured to a driving gear wheel 14; rotatably mounted intl e frame 1; and the rate of revolution of the same directly determines the cutting rate of the tool 15. The said tool 15 is mounted in a suitable sliding head 16 carried by the ram 2, in manner well understood.

The materials usually planed on a shaping machine of the type herein described, vary in hardness from soft brass to chromenickel steel; and a speed range of 130 to 7 strokes per minute, respectively, will practically meet the above requirements. To obtain such ranges in speed, various complicated or noisy combinations of speed gearing have heretofore been employed. Other mechanisms have operated satisfactorily on the slower speeds; but on the higher speeds, due to the multiplicity of running parts, have been attended with disagreeable noise, undue wear and loss lof power.

In the present invention, a driving pinion 17 is arranged to mesh with the gear wheel 14 and which pinion is loosely moimted on a driving or power shaft 1S rotatably mounted in the frame 1. In the form of the invention shown in Figs. land 2, two gears 19 and 2O of different diameter are secured to the pinion 17 and revolve .as Vone vmember with it. The gear `wheel l20, moreover, ,has ,clutch teeth 21 formed thereon which are arranged to engage with a clutch member 22, sli lably keyed to the driving shaft 13. A pinion. 23 keyed to the power shaft 1S and is shown meshing with a gear wheel 24 rigidly connected to gea-r wheels 25 and 26 of different diameters and loosely mounted on a jack shaft 27 iXedly secured in the frame 1. Rotation is imparted to the driving' shaft 1S through a cone pulley 28 and a driving disk 29, which latter is keyed to the shaft 13 and pinned to the cone or pulley by means of pins 30.

A shifter bar 31 is slidably mounted in the frame 1 and is provided with projecting arms 32 and 33 engaging, respectively, the clutch member 22 and the gear wheels 24, 25 and 26. The said shifter bar is, furthermore, hinged to a control lever 34 by means of a pin 35; and the lower end of said control lever is hinged by means of a pin 36 to a bearing 37 secured to the frame 1. At the upper end of the control lever there is provided a hand knob 38 secured to a push pin 39, which in turn is slidably mounted in the control lever 34 and arranged to engage holes 40 drilled in a flange 41 secured to the frame 1, the said flange 41 being provided with suitable characters indicating the speeds obtained in the various positions, such as-S, M and F, designating, respectively, slow, medium and fast, and which it will be noted are progressive, due to the particular arrangement of the gears. Between the pinion and the frame wall, space slightly wider than the gear wheel 24 is provided for the purpose of allowing the said gear wheel to be shifted, by means of the control lever 34 and shifter bar 31, entirely out of engagement with the pinion 23; and which thereby also throws all three gears 24, 25 and 26 out of engagement, causing them to remain motionless and only the wheel 14 to engage its pinion 17 which is then driven directly through the clutch teeth 21. The mechanism as described thus provides two methods of driving the pinion 17 and thereby the gear wheel 14, first-by meshing gear teeth, and secondly,-by clutch teeth.

In F ig. 2, the gears are shown in such position that power would be transmitted from the shaft 18 to the pinion 13, thence to the gear 24 and pinion 26, to gears 20 and 17 and the gear 14, and from the latter to the crank pin 12 and finally to the cutting tool. The above train of gearing produces the slowest speeds and is suitable for the most powerful cutting. By sliding the connected gears 24, 25 and 26, of diiferent diameters, on their shaft 27 so that the teeth of gear engage with the teeth of gear 19, the teeth of pinion 26 are, through the same motion, disengaged from the teeth of gear 20 while the teeth of gear 24 remain in engagement with the teeth of pinion 23. Thus a second set of medium speeds is provided for. By continuing the sliding of the jack shaft gears until the teeth of the gear 24 are disengaged from the teeth of pinion 23, owing to the spacing of the gears, the same motion also effects a disengagement of gears 25 and 19 and an engagement of the clutch member with the clutch teeth 21 on the gear 20. This affords a third set of speeds,

the power being carried from the shaft 18 through the clutch member 22 directly to the gears 20 and 17 and thus to the gear 14 and its crank pin 12. The latter arrangement gives the fastest set of speeds, and but two gearspinion 17 and gear 14 are in engagement between the power shaft 18 and the crank pin 12, reducing tooth motion and noise to a minimum. It is evident that the mechanism thus far described produces three different speeds for each speed of the driving shaft; and with, for example, a three step cone 28, nine cutting speeds in all are obtainable.

Referring to Figs. 3 and 4, it is obvious that gears 19 and 25 of the shaper shown in Figs. 1 and 2 may be discarded and the driving pinion 23 made of the same width (as the gear 24 to thereby produce one set of slow back geared speeds through the jack (shaft gear member and another set of fast speeds through the clutch member. By using (a driving cone with four steps, eight cutting speeds will thus be obtainable. The flange 41 would then be provided with characters such. as-S and F, indicating slow and fast.

We claim:

1. ln combination: a power shaft, a Clutch member slidably connected thereto, an element loose thereon and having gear and clutch portions and a pinion keyed thereto; a counter shaft and a rotatable and longitudinally movable element thereon having a plurality of gear portions; a driven gear meshing with a gear portion of the first element; and shifting' mechanism for engaging the clutch member and portion or meshing the gear portions of the second element with the power shaft pinion and a gear portion of the first element.

2. In combination: a power shaft; a driving member loosely mounted thereon; a driven member meshing therewith; a clutch member, one-half of which is slidable on the said shaft and the other half of which is fixed to said driving member; a gear wheel mounted on said power shaft and lixedly secured to said driving member; a gear wheel fixedly mounted on said power shaft; a counter shaft; gear wheels loosely mounted on said counter shaft and slidable thereon; and means to slide said counter shaft gear wheels along their said shaft and the said clutch half along the power shaft.

3. In combination: a power shaft; a driving member loosely mounted thereon; a

driven member meshing therewith; a clutch member, one-half of which is slidable on the said shaft and the other half of which is fixed to said driving member; a gear wheel mounted on said power shaft and ixedly secured to said driving member; a gear wheel xedly mounted on said power shaft; a counter shaft; gear wheels loosely mounted on said counter shaft and slidable thereon; means to slide said counter shaft gear wheels along their said shaft and the said clutch half along the power shaft, including a control'rod, and a shifter rod, and prongs thereon to engage said slidable clutch member and the counter shaft gear wheels to simultaneously operate the saine.

4. In combination: a power shaft; a driving member loosely mounted thereon; a driven member meshing therewith; a clutch member, one-half of which is slidable on the said shaft and the other half of which is fixed to said driving member; a gear wheel mounted on said power shaft and fixedly secured to said driving member; a gear wheel fixedly mounted on said power shaft; a counter shaft; gear wheels loosely mounted on said counter sha-ft and slidable thereon; means to slide said counter shaft gear wheels along their said shaft and the said clutch half along the power shaft, including a control rod, and a shifter rod, and prongs thereon to engage said slidable clutch member and the counter shaft gear wheels to simultaneously operate the same, and entirely disengage said counter shaft gear wheels from the said power shaft gear wheels.

5. In combination: a power Shaft; a driving member loosely mounted thereon; a driven member meshing therewith; a clutch member, one-half of which is slidable on the said shaft and the other half of which is fixed to said driving member; a gear wheel mounted on said power shaft and fiXedly secured to said driving member; a gear wheel iixedly mounted on said power shaft; a counter shaft; gear wheels loosely mounted on said counter shaft and slidable thereon; means to slide said counter shaft gear wheels along their said shaft and the said clutch Copies of this natent mav be obtained for ve cents each, by addressing the half along the power shaft, including a control rod, a shifter rod, and prongs thereon to engage said slidable clutch member and the counter shaft gear wheels to simultaneously operate the same; and indicating means cooperating with said control rod.

6. The combination with a power shaft of change speed mechanism, comprising a driving pinion on said shaft and a driving gear wheel engaging therewith; a plurality of gear wheels on said power shaft and rotatable with said pinion; a clutch member one-half of which is connected with said pinion and the other half slidably mounted upon said power shaft; a counter shaft; a plurality of gear wheels mounted thereon adapted to engage with the power shaft gear wheels to reduce the speed of said pinion; and means to disengage the said counter shaft gear wheels from the power shaft gear wheels and effect a power connection of the said clutch to drive said pinion and its driving gear wheel at the fastest speed.

7. In change speed mechanism: the driving pinion (17), power shaft (18) upon which said pinion is mounted, stepped cone (28) thereon, the gear wheels (19) and (20) rotatable with pinion (17) on the said power shaft and the gear wheel (23) rotatable with said shaft, the counter-shaft (27), the gear wheels (24), (25) and (26) rotatable on said counter-shaft and adapted tohtransmit rotation from said power shaft to the driving pinion (17), the clutch halves (2l) and (22) on said power shaft and the rods (31) and (34C) with prongs (32) and (33) to shift respectively the clutch half (22) and the gear wheels (24:), (25) and (26).

Signed at Newark, in the county of Essex, and State of New Jersey, this 8th day of August, A. D. 1913.

HENRY E. EBERHARDT. FRANK E. EBERHARDT. HENRY J. EBERHARDT. Witnesses:

CHARLES L. MEYER, ALBERT A. FoRs'rnR.

Gommissicner of Patents.

Washington, D. C. 

